Thread: Desirable features of an all round NZ hunting rifle

I'm not aware of any practically-useful formulae but the critical consideration is that the potential aiming error increases the higher the magnification. My 6BR varmint gun is often run on its max 25X magnification and if you're trying to hit a rabbit at say 400yds, you want to eliminate as many aiming errors as possible.

Consciously keeping your eye in the centre of the visual field helps but it's a distraction. When you're making wind calls especially in LR target shooting, you don't need extra distractions. When I set up for a long range shot, I almost subconsciously reach for the parallax knob. That variable is then gone.